2185390 has 16 divisors (see below), whose sum is σ = 3982608. Its totient is φ = 863296.

The previous prime is 2185387. The next prime is 2185409. The reversal of 2185390 is 935812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487 + ... + 2146.

It is an arithmetic number, because the mean of its divisors is an integer number (248913).

2^2185390 is an apocalyptic number.

2185390 is a deficient number, since it is larger than the sum of its proper divisors (1797218).

2185390 is a wasteful number, since it uses less digits than its factorization.

2185390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2185390 is about 1478.3064634912. The cubic root of 2185390 is about 129.7706013573.

The spelling of 2185390 in words is "two million, one hundred eighty-five thousand, three hundred ninety".